using the MultiMix 8 USB 2.0 for streaming on streetjelly.com

There is a site called streetjelly.com and is an online "open mic". Right now I am using my tascam us224 audio interface to hook up a mic and do the guitar/vocal thing.

If I get the MultiMix 8 USB 2.0, can I hook up a MP3 player to play backing tracks and then use my mic(s) for the guitar and vocals. Will the stereo output from the MP3 player mix with the live mic and send a stereo signal out through the USB cable that can be sent to streetjelly?

Thanks in advance,

Kevin

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EDIT: Found this in the on-line reference PDF:

2TK To Mix
When you press this switch, the signal coming in through the 2-
TRACK IN gets routed to the MAIN MIX, joining whichever
other signals are already part of the main mix. Used this way, the
2-TRACK IN effectively becomes another stereo channel (but
without all the extras like pan, EQ, etc.).

I think the problem is that you can't send a "duplex" signal over the USB (sort of). You send your voice over the USB into the PC -- fine.
You send your backing track from the PC to the mixer -- fine
The backing track won't go back to the PC with the voice, though (this is my best understanding).

The way I think to do it is to
1.) record the backing track to a MP3 player (use wav files for better quality),
2.) plug the MP3 player into the stereo tape in (RCA cables)
3.) press down the tape - to - mix button (I can't see what that button is labeled, but it is there)

You should be able to hear your voice and backing track (as before), but now the whole mix will be sent to the PC for streaming.

Your reply makes sense, however, I have used the old version of the USB multimix 8 to do the same thing. I stream live shows into SecondLife and currently I am on orders with the Air Force so I bought this mixer to stream from my hotel room. Back home I am doing the same thing with an Allen & Heath Zed10 FX using the USB. Actually the the Allen & Heath has a level control for the USB coming into the board which makes it very convenient. I remember with my old Alesis Multimix, I had to control the levels from what ever software I was using to play the track, such as Winamp for example. Also when recording into Cubase, if I leave the 2TK to Mix button depressed and record a new track while listening to the original, it will again record the music track to the new channel. if I remove the 2TK to mix, and then press 2TK to control room, I can monitor the original track and record a new one without the music.

I feel there has to be a way, also when recording my voice into Cubase, it will also record the effects such as reverb. When I stream my voice, the mix is dry, without any effect.

The is a difference between how the 1.0 and 2.0 transmit audio with the channels.

The old 1.0 models will take all the channel of the mixer and bus them to a 'stereo mix', similar to the master output on the mixer. This mix will show up as the first and only set of stereo inputs.

The new 2.0 mixer will use channel 1 and 2 as the first two streaming channels. This is because the mixer can stream the channels individually. Inputs 9 and 10 from the sound card will be a stereo mix and will include your FX. You will need to use software that will let you use these channels. Some simple software, like video streaming applications, will default to using the first two channels. Keep in mind you can always add FX later in your recording software, if you are using a DAW.